Why Parkinson's Disease Is So Scary: No Cause, No Cure. But It Won't Kill You

Robin Williams’ suicide on Tuesday was partly related to his diagnosis of Parkinson’s Disease, the actor’s wife revealed on Thursday.

“Robin’s sobriety was intact and he was brave as he struggled with his own battles of depression, anxiety as well as early stages of Parkinson’s Disease, which he was not yet ready to share publicly,” Susan Schneider said in a statement.